It takes approximately 12 hours for food to entirely digest.
93
Your stomach produces a new layer of mucus every two weeks so that it doesn't digest itself.
160
On average, there's 100 billion neurons in the human brain.
83
The human brain has the capacity to store everything that you experience.
4k
Although African-Americans make up only 13% of the U.S. population, they accounted for one half of the estimated new HIV/AIDS diagnoses in 2004.
70
The pupil of the eye expands as much as 45 percent when a person looks at something pleasing.
130
According to a 1950s survey, 75% of men ejaculate within two minutes of penetration.
109
